高锰酸钾氧化法制备香紫苏内酯反应废水的有效处理  

Effluent Effective Treatment for Preparation of Sclareolide Reaction via Potassium Permanganate Oxidation

作　　者：杨绍祥[1] 郝颜峰 李丽慧[1] 吕艳羽 刘永国[1] 田红玉[1] 

机构地区：[1]北京工商大学食品学院食品风味化学北京市重点实验室,北京100048

出　　处：《化学试剂》2016年第3期236-238,258,共4页Chemical Reagents

基　　金：国家科技支撑计划资助项目(2011BAD23B01);北京市教委科研计划一般资助项目(SQKM201610011003)

摘　　要：高锰酸钾氧化法是制备香紫苏内酯的一种主要方法,但该反应会产生大量的含Mn^(2+)废水,对环境造成污染。对实验废水的处理进行了研究,分别用饱和NaHCO_3、Na_2CO_3溶液调节废水的pH至中性,将废水中MnCO_3沉淀分离,最终达到有效处理废水的目的,最后采用高碘酸钾分光光度法对处理前后的废水中Mn^(2+)含量进行测定,处理前废水中Mn^(2+)含量为20.43 g/L,经NaHCO_3、Na_2CO_3处理后的废水样中Mn^(2+)含量分别为0.086 6、0.953 0 mg/L,均低于国标(GB 8978—1996)的最低排放标准2 mg/L。Potassium permanganate oxidation is a primary method for preparing sclareolide. But the reaction will produce large amounts of effluent containing Mn^2＋,which pollute the environment. In this work,the effluent effective treatment methods will be investigated. It improves the post-processing method,uses NaHCO3 and Na2CO3 saturated solution to adjust the p H of the effluent to 7 ~ 8,and results in precipitation. The goal of the effective disposal was reached. Finally,use KIO4 spectrophotpmetric to detect the content of manganese ion in wastewater. Before treatment wastewater manganese ion content is 20. 43 g / L,and manganese ion content were 0. 086 6 mg / L and 0. 953 0 mg / L,which were lower than the national standard（ GB 8978—1996） required 2 mg / L after treatment by NaHCO3 and Na2CO3 saturated solution.

关 键 词：有效处理 废水 香紫苏内酯 锰离子含量 

分 类 号：TQ115[化学工程—无机化工]